<?php

require_once 'HTMLPurifier/AttrDef/URI/Email.php';

/**
 * Primitive email validation class based on the regexp found at 
 * http://www.regular-expressions.info/email.html
 */
class HTMLPurifier_AttrDef_URI_Email_SimpleCheck extends HTMLPurifier_AttrDef_URI_Email
{
	
	function validate($string, $config, &$context) {
		// no support for named mailboxes i.e. "Bob <bob@example.com>"
		// that needs more percent encoding to be done
		if ($string == '') return false;
		$string = trim($string);
		$result = preg_match('/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i', $string);
		return $result ? $string : false;
	}
	
}

